{"public_id":"CTF-EDA-000005","vault":"EDA","record_type":"sediment-layer","record_type_label":"Sediment layer","title":"Basal glacial till, below 110 cm, inferred age","summary":"The till beneath the profile, inferred to date from the last ice retreat.","description":"No direct date exists for this layer at the site. Its age is inferred from the regional deglaciation sequence and the profile's position on a glacial outwash terrace.","evidence_tier":"T3","verification_status":"expert","time":{"start":-15000,"end":-12000,"precision":"millennium","uncertainty_years":1500,"dating_method":"stratigraphic-position","geological_interval":"pleistocene","bands":["pleistocene"]},"geometry_public":{"type":"point","coordinates":[-3.6503,57.2172]},"precision_class":"exact","sensitivity_class":"open","locality_public":"Abernethy Forest, Strathspey, Scotland","place":{"id":"abernethy-forest","name":"Abernethy Forest","type":"site"},"depth":{"top_m":1.1,"bottom_m":1.2},"reconstruction":{"method_ref":"stratigraphic-inference","method_title":"Stratigraphic inference","confidence_statement":"Good confidence that the till post-dates the last glacial maximum and pre-dates the Holocene. No finer resolution is claimed.","derived_from":[{"id":"CTF-EDA-000001","title":"Pinewood podzol profile, Abernethy","tier":"T1"}]},"rights":{"licence":"CC-BY-4.0","licence_label":"CC BY 4.0","licence_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Chronos Terra Foundation inference from published deglaciation sequences (illustrative placeholder)","rights_holder":"Chronos Terra Foundation","source_name":"Chronos Terra field survey","source_url":"https://chronos-terra.example.org/methods/stratigraphic-inference","retrieved_on":"2026-09-01","mode":"hosted","citation":"Chronos Terra Foundation (2026). Basal glacial till, inferred age. CTF-EDA-000005."},"media":[],"links":[{"to":"CTF-EDA-000001","to_title":"Pinewood podzol profile, Abernethy","to_vault":"EDA","to_tier":"T1","type":"found-in","label":"Found in","tier":"T3","note":"The till is the C horizon of this profile.","citation":"Chronos Terra inference from regional deglaciation sequences.","direction":"out","to_time":{"start":2021,"end":2021}}],"registry":{"registered_on":"2026-09-01","version":"3ce963172f32","url":"https://chronos-terra.example.org/records/CTF-EDA-000005","json_url":"https://chronos-terra.example.org/generated/records/CTF-EDA-000005.json"}}